Question

resolva os sistemas b) y=x+2
y+x=14-x

Answer 1

-x + y = 2 (*-1)

2x + y = 14

____________

x - y = -2

2x + y = 14

____________

3x = 12

x = 12/3

x = 4

2x + y = 14

2(4) + y = 14

8 + y = 14

y = 14 - 8

y = 6

BONS ESTUDOS!